As of August 2024, there were reportedly more than 700 unidentified objects in the Space-Track catalogue maintained by the 18th Space Defense Squadron. These are not alien spacecraft or mysterious ...

The moment an object from another star system appears in survey data, astronomy shifts into sprint mode. Interstellar visitors do not linger, and each one offers a narrow window to study material ...

The DARPA program aims to improve the ability to "track potential threats and objects of interest originating from or transiting cislunar space." When you purchase through links on our site, we may ...

Add Yahoo as a preferred source to see more of our stories on Google. A streak of light is thought to be comet 3I/ATLAS as it flies past Mars from Wednesday through Tuesday and only the third ...

Add Yahoo as a preferred source to see more of our stories on Google. Space junk falling out of orbit can be a threat -- now scientists say they have found a new way to track it as it speeds through ...

Gen. Chance Saltzman, chief of space operations, speaks Sept. 17 at the 2025 Advanced Maui Optical and Space Surveillance Technologies (AMOS) Conference. Credit: AMOS livestream WASHINGTON — The top ...

Astronomers are monitoring an object headed our way that may have wandered over from another star system.Scientists have discovered what might be only the third known interstellar object to pass ...

Space debris—the thousands of pieces of human-made objects abandoned in Earth's orbit—pose a risk to humans when they fall to the ground. To locate possible crash sites, a Johns Hopkins University ...

Space junk falling out of orbit and crashing toward Earth is a growing threat. Indeed, old satellites and spacecraft parts reenter our planet’s atmosphere more than three times a day. When these ...